Kikusui PLZ164WL User Manual
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Kikusui PLZ164WL User Manual

Plz-4wl series electronic load
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User's Manual
PLZ-4WL Series Electronic Load
PLZ164WL
PLZ334WL
PART NO. IB021036
Oct. 2015
Installation and
Preparation
Basic Functions
Advanced Operations
Sequences
External Control
Maintenance
Specifications
1
2
3
4
5
6
7
App

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Summary of Contents for Kikusui PLZ164WL

  • Page 1 PART NO. IB021036 Oct. 2015 Installation and Preparation Basic Functions Advanced Operations User’s Manual Sequences PLZ-4WL Series Electronic Load External Control PLZ164WL Maintenance PLZ334WL Specifications...

  • Page 2: About Plz-4Wl Series Manual

    If the manual gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/agent, and provide the “Kikusui Part No.” given on the cover. The Operation Manual has been prepared with the utmost care;...

  • Page 3: Notations Used In This Manual

    Notations used in this manual The PLZ-4WL Series Electronic Load is a multifunctional • The PLZ164WL Electronic Load is also referred to as the system designed to offer the highest levels of reliability and PLZ164WL, the PLZ334WL Electronic Load is also referred safety.

  • Page 4: What Is An Electronic Load

    You can use the sequence function to create programs that simulate real Example for the PLZ164WL load conditions and use these programs to produce varying loads in tests on devices such as power supplies for printers.

  • Page 5: Table Of Contents

    Contents Soft Start 39 Short 40 Turning the short function on and off 40 Locking the Keys 41 About PLZ-4WL Series Manual 2 Switching from Remote Mode to Local Mode Notations used in this manual 3 Product Overview 3 Advanced Operations What Is an Electronic Load? 4 Memory Types 44 Installation and...
  • Page 6 Other functions 113 External Control Common specifications 114 External Control 80 General specifications 115 About the J1 connector 81 Dimensions 116 J1 connector pin arrangement 82 Appendix Precautions for high-speed load simulations 83 Superimposing Constant Current Mode (CC Mode) 88 A Operating Area 118 Turning the Load On and Off through External Basic operation modes 118...
  • Page 7 Search by Topic "Checking the Package Contents" p. 12 • What accessories are included in the package? Preparation  See the included “Setup Guide”　 • The installation space is limited, so I want to check the installation conditions. document, or the electronic version of　 the document on the CD-R.

  • Page 8: Front Panel

    Front Panel Display H 100A 30V 0.00 0.00 0.000 0.000 C . C 0.000 0.000 0 : 06 : 23 0.000 0.01 0.01 mA/s mA/s SLEWRATE SLEWRATE Name Function POWER switch p. 15 Flip the switch to the ( ) side to turn the power on. Flip it to the ( ) side to turn the power off.
  • Page 9 Name Function Up, down, left, and right keys. – CURSOR INS key Inserts a step (sequence editing). – DEL key Deletes a step (sequence editing). – PREV key Returns to the previous screen (menu settings). – NEXT key Switches to the next screen (menu settings). –...

  • Page 10: Rear Panel

    Rear Panel Name Function Air outlet Vent for cooling the PLZ-4WL. – AC INPUT Power inlet. p. 14 USB port for controlling the PLZ-4WL remotely. – RS232C RS232C port for controlling the PLZ-4WL remotely. – GPIB GPIB cable connector for controlling the PLZ-4WL remotely. –...

  • Page 11: Installation And Preparation

    Installation and Preparation This chapter describes how to unpack and prepare this product before you use it.

  • Page 12: Checking The Package Contents

    When you receive the product, check that all accessories are included and that the accessories have not been damaged during transportation. If any of the accessories are damaged or missing, contact your Kikusui agent or distributor. We recommend that you keep all packing materials, in case the product needs to be transported at a later date.

  • Page 13: Attachment To The Rack Adapter

    Checking the Package Contents Attachment to the rack adapter Before assemble the unit to the rack adapter, remove the handle and the feet. As for the instruction of mount assembly, please refer to the instruction manual of KRA series. Install the suitable support angles applying to the used rack system to support the instrument. In case the unit is disassembled from the rack adapter it is recommended that all the removed parts are kept in the storage.

  • Page 14: Connecting The Power Cord

    If the supplied power cord cannot be used because the rated voltage or the plug shape is incompatible, have a qualified engineer replace it with an appropriate power cord that is 3 m or less in length. If obtaining an appropriate power cord is difficult, consult your Kikusui agent or distributor.

  • Page 15: Turning The Power On

    Turning the Power On Turning the POWER switch on If the POWER switch is turned on for the first time after purchasing the PLZ-4WL, the PLZ- 4WL starts up using factory default settings. For all other cases, the PLZ-4WL starts up using the settings that existed when the POWER switch was turned off the last time.

  • Page 16: When The Plz-4Wl Does Not Start Properly

    When the PLZ-4WL does not start properly This section introduces what measures you can take when the PLZ-4WL does not start properly. If following the remedy shown here does not solve the problem, contact your Kikusui agent or distributor. Nothing is displayed.

  • Page 17: Load Wiring

    30 C or greater, or when wires are bundled together and little heat is radiated. Nominal Cross- AWG (Reference Cross- Kikusui- Allowable Current Sectional Area Recommended Sectional Area) [mm [A] (Ta = 30C)

  • Page 18: Methods For Ensuring Stable Operation

    Methods for Ensuring Stable Operation When you use the PLZ-4WL at a high response speed, it is important to reduce the inductance of the load wiring and configure the response speed setting appropriately. If the conditions are not configured appropriately, oscillation and other forms of operational instability may occur.

  • Page 19: Optimizing The Response Speed

    Methods for Ensuring Stable Operation Example of waveform Current ΔI ΔT Voltage across the load input terminals Voltage across the load input terminals Minimum operating Current voltage This change results in unstable oscillation and hunting. To make sure that the voltage resulting from inductance remains within the range of the electronic load’s minimum operating voltage and maximum input voltage, make the wiring as short as possible and twist the wiring, or reduce the slew rate.

  • Page 20: Do Not Apply Excessive Voltages To The Load Input Terminals

    Methods for Ensuring Stable Operation Do not apply excessive voltages to the load input terminals Do not apply a voltage that is greater than the maximum voltage of 30 Vdc to the load input CAUTION terminals. Doing so may damage the product. H 50A 100.00 150.00...

  • Page 21: Connecting To The Load Input Terminals

    Connecting to the Load Input Terminals This section explains how to connect the DUT to the DC INPUT terminals on the front panel. Possible electric shock. WARNING • Do not touch the load input terminals when the output is turned on. •...
  • Page 22 Connecting to the Load Input Terminals Connect the load wiring to the load input terminals using the load input terminal screw set that came with the PLZ-4WL. Bolt (M8 × 18) Spring washer (M8) Load input terminal cover Crimping terminal Nut (M8) Load wiring Using the PLZ-4WL’s screws, connect one end of the chassis-...
  • Page 23 Connecting to the Load Input Terminals Removing the terminal barrier A barrier is placed between the DC INPUT terminals when the PLZ-4WL is shipped from the factory. To avoid shorting between the terminals, we recommend that you leave the barrier in when you make connections.

  • Page 24: Remote Sensing

    Remote Sensing When the load wiring is long, the voltage drop caused by the wiring’s resistance cannot be ignored. “Remote sensing” is a function that can be used to compensate for this voltage drop. To accurately set the resistance, voltage, and power, use remote sensing. Remote sensing makes operation more stable by improving the transient characteristics in the constant-resistance (CR), constant-voltage (CV), and constant-power (CP) modes.

  • Page 25: Basic Functions

    Basic Functions This chapter explains the operations for each operation mode and other basic functions.

  • Page 26: Panel Operation Basics

    Panel Operation Basics You can perform operations from the operation panel on the front of the PLZ-4WL. The PLZ- 4WL produces a beeping sound to notify you when you make an invalid selection or perform an invalid key operation. Function of the LOAD key If you press LOAD when the load is turned off, the LOAD LED lights, and the load turns on.

  • Page 27: Turning The Load On And Off

    Turning the Load On and Off The load is on when current is flowing through the PLZ-4WL or when the PLZ-4WL is supplying current. The load is off when current is not flowing through the PLZ-4WL and the PLZ-4WL is not supplying current. You can turn the PLZ-4WL’s load on and off by pressing LOAD.

  • Page 28: Turning The Load Off

    Turning the Load On and Off Turning the load off Press LOAD to turn off the load. Turn off the output of the DUT. If you are using a relay, electromagnetic switch, or other device in the connection between the load input terminals and the output terminals of the DUT, turn the device off.

  • Page 29: Operation Modes

    Operation Modes The following four operation modes are available on the PLZ-4WL. Constant voltage mode can be added to constant current mode or constant resistance mode (+CV). • Constant current mode (CC mode, CC+CV mode) • Constant resistance mode (CR mode, CR+CV mode) •...

  • Page 30: Constant Current Mode (Cc Mode)

    Constant Current Mode (CC mode) In constant current mode (CC mode), you set the current [A]. You can also add constant voltage mode (+CV mode) to constant current mode (CC mode). Configuring CC mode Select the operation mode, and set the current. LOAD LOCK MODE...

  • Page 31: Configuring Cc+Cv Mode

    Constant Current Mode (CC mode) Configuring CC+CV mode CC+CV mode is constant current mode (CC mode) with CV mode added to it. You can add CV mode even while the load is on. LOAD LOCK MODE SET / VSET RANGE SLEW RATE OPP / OCP RECALL...

  • Page 32: Constant Resistance Mode (Cr)

    Constant Resistance Mode (CR) In constant resistance mode (CR mode), you set the inverse of the resistance, the conductance [S]. You can also display the resistance value converted from the conductance value. Conductance [S] = 1/resistance [] You can also add constant voltage mode (+CV mode) to constant resistance mode (CR mode).

  • Page 33: Configuring Cr+Cv Mode

    Constant Resistance Mode (CR) Turn the rotary knob to set the conductance. The CR mode settings are complete. When you press LOAD, the LOAD LED lights, and the PLZ-4WL starts supplying current. You can change the conductance even when the load is Configuring CR+CV mode CR+CV mode is constant resistance mode (CR mode) with CV mode added to it.

  • Page 34: Constant Voltage Mode (Cv Mode)

    Constant Voltage Mode (CV mode) In constant voltage mode (CV mode), you set the voltage [V]. Configuring CV mode Select the operation mode, and set the voltage. LOAD LOCK MODE SET / VSET RANGE SLEW RATE OPP / OCP RECALL ENTER LOAD + CV...

  • Page 35: Constant Power Mode (Cp Mode)

    Constant Power Mode (CP mode) In constant power mode (CP mode), you set the power [W]. Configuring CP mode Select the operation mode, and set the power. LOAD LOCK MODE SET / VSET RANGE SLEW RATE OPP / OCP RECALL ENTER LOAD + CV...

  • Page 36: Switching

    Switching The switching function is used to switch between two preset load currents. Switching can be performed in CC mode and CR mode. Switching is suitable for transient-response testing of regulated DC power supplies and similar devices. To use the switching function, you need to set a switching level and a switching interval and then turn on the switching function.

  • Page 37: Setting The Switching Interval

    Switching Setting the switching interval You can set the switching interval by specifying a frequency and duty ratio or by specifying an amount of time. ■ Setting the switching interval by specifying a frequency and duty ratio Set the frequency and the duty ratio (the ratio of HIGH to LOW). It does not matter whether you set the frequency or the duty ratio first.

  • Page 38: Slew Rate

    Slew Rate You can use the slew rate to set the speed at which the current is changed. The slew rate is valid in constant current mode (CC mode). Use the slew rate when you are using the switching function and at other times when the current is being changed dramatically. You can set the slew rate according to the current range as an amount of current change per unit of time.

  • Page 39: Soft Start

    Soft Start You can use the soft start function to raise the input current gradually. The soft start function is valid in constant current mode (CC mode). Soft start is useful when: • The load is turned on at the same time that voltage is applied to the load input terminals. •...

  • Page 40: Short

    Short When the short function is enabled, the maximum current is set in CC mode or the minimum p. 82 resistance is set in CR mode, and the short signal output of the J1 connector is turned on. The short signal output terminal is a relay contact (30 Vdc/1 A). You can drive an external relay for high currents or a similar device and short the load input terminals.

  • Page 41: Locking The Keys

    Locking the Keys You can lock the PLZ-4WL’s keys to prevent mistaken operations such as changes to the settings and overwriting of memory entries and sequence data. The following keys can be used even when the keys are locked. • LOCK (SHIFT+LOCAL; locks and unlocks the keys) •...

  • Page 42: Switching From Remote Mode To Local Mode

    Switching from Remote Mode to Local Mode Remote icon H 50A 0.00 0.000 0.000 0.500 0.01 mA/μs SLEWRATE When the PLZ-4WL is in remote mode, the remote icon appears on the display. To use the front panel to switch the PLZ-4WL back to local mode, press LOCAL. PLZ-4WL...

  • Page 43: Advanced Operations

    Advanced Operations This chapter explains ABC preset memory, setup memory, protection functions, and the menu.

  • Page 44: Memory Types

    Memory Types The PLZ-4WL is equipped with both preset and setup memory. ■ Preset memory You can save fundamental settings (current, conductance, voltage, and power) that are used often in preset memory. Because you can recall saved settings just by pressing a key, this feature is very useful when you want to switch between three different types of output in order.

  • Page 45: Abc Preset Memory

    ABC Preset Memory You can save preset memory entries to A, B, or C. In A, B, and C, you can save fundamental settings for each range of each operation mode. You can save and load preset memory entries regardless of whether the load is on or off. The protection-function-activation values are not saved.

  • Page 46: Recalling Abc Preset Memory Entries

    ABC Preset Memory Recalling ABC preset memory entries There are two methods of recalling the preset memory, “SAFETY” and “DIRECT.” SAFETY You can recall a memory entry after first checking its contents on the display. DIRECT The settings of the setup memory entry are applied immediately. The factory default setting is “SAFETY.”...

  • Page 47: Setup Memory

    Setup Memory You can save up to 100 setup memory entries (0 to 99). The current settings of the items listed below are saved to the setup memory. You can add a memo of up to 15 characters in length to each memory entry. You can recall a saved memory entry by specifying its number. •...

  • Page 48: Recalling Setup Memory Entries

    Setup Memory Recalling setup memory entries You can save almost all the settings, including the operation mode and range, to the setup memory. Please be aware that if the saved operation mode and range are different from the current settings, they will change. H 50A 0.00 0.000...

  • Page 49: Protection Functions

    Protection Functions The protection functions can be used to automatically turn off the load or limit the current to prevent the PLZ-4WL’s internal circuitry from being damaged and to protect the DUT. An alarm occurs when the protection functions are activated. When an alarm occurs, the load turns off (or the current is limited), and the ALARM STATUS pin (pin 20) of the J1 connector on the rear panel turns on (open-collector output from a photocoupler).
  • Page 50 Protection Functions When the remote sensing function is being used The sensing point of the remote sensing function is the other end of the wire connected to the p. 24 remote sensing terminal on the PLZ-4WL front panel. Connect the end of this wire to the output of the DUT that you want to sense.

  • Page 51: Clearing Alarms

    Protection Functions Make sure that the load is off. If the LOAD LED is lit, press LOAD to turn the load off. Press OPP/OCP until OPP is highlighted on the display. The OPP/OCP key lights. Pressing OPP/OCP switches between OCP and OPP. Turn the rotary knob to set the overpower-protection-activation value.

  • Page 52: Response Speed

    Response Speed The PLZ-4WL operates by detecting the input current or voltage and controlling it through negative feedback. You can ensure stable operation by reducing the response speed. The response speed can be specified in CV mode and CR mode. The response speed is set to normal by factory default.

  • Page 53: Elapsed Time Display And Auto Load-Off Timer

    Elapsed Time Display and Auto Load-Off Timer Two convenient functions are available for the discharge tests of batteries. • You can measure the time from the start of discharge to the cutoff voltage. • You can measure the closed-circuit voltage after a specified time has elapsed since the start of discharge (voltage measurement).

  • Page 54: Menu

    Menu In the menu screen, you can set the PLZ-4WL’s operating conditions and configure functions. Menu Setu 2. Confi uration 3. Calibration 4. Model Info Menu screen (item 1) display PREV NEXT Make sure that the load is off. If the LOAD LED is lit, press LOAD to turn the load off. Press MENU (SHIFT+SET/VSET).
  • Page 55 Data the stop bit Stop NONE Parity (fixed at NONE) Parity OFF, ON Acknowledgment 0x0B3E Vendor ID 0x1019(PLZ164WL) Product ID 0x1020(PLZ334WL) AB123456 (example) Serial number 3.External CC/CR/CP OFF: Disabled, ON: Enabled External control for the CC, CR, and CP modes...

  • Page 56: Factory Default Settings (Initialization)

    Keep holding ENTER until the display lights up and “SET CLR” appears. The PLZ-4WL will start up with the factory default settings. SET CLR [ PLZ164WL ] SET CLR VERSION is displayed. 1.00 MAIN 1.02 Example for the PLZ164WL. PLZ-4WL...

  • Page 57: Sequences

    Sequences Sequences This chapter explains sequence function.

  • Page 58: Sequence Function

    Sequence Function The sequence function automatically executes instructions specified in advance one operation at a time. A variety of waveform simulations can be executed through the specification of a sequence of operations (steps). The sequence that you create is saved by the backup function even when the power is turned off.

  • Page 59: Common Sequence Editing Operations

    Common Sequence Editing Operations This section describes the sequence editing operations that are common to all edit screens, such as moving the cursor within an edit screen, selecting items, entering values and characters, and turning pages. Please familiarize yourself with the functions of each key. ■...

  • Page 60: How Normal Sequences Work

    How Normal Sequences Work Normal sequences are composed of two elements: programs and steps. Programs are groups of executable units called steps. The steps in a program are executed in ascending order, starting from step 001. A single execution of a program is completed after the program’s last step has been executed.
  • Page 61 The program operation mode NCR: CR mode NCV: CV mode NCP: CP mode Range PLZ164WL: The program current and voltage ranges 50 A/30 V, 5 A/30 V, 500 mA/30 V, 50 A/4 V, 5 A/4 V, 500 mA/4 V PLZ334WL:...

  • Page 62: Editing Steps In A Normal Sequence

    Editing Steps in a Normal Sequence After you finish configuring the program settings, press NEXT (SHIFT+ ) to configure the step settings. You can specify one execution condition per step. One step corresponds to one executed operation in the executed waveform. Adding steps When you press INS (SHIFT+ ), a step is inserted above the currently highlighted step.

  • Page 63: Deleting Steps

    Editing Steps in a Normal Sequence Step-execution pattern Set the execution pattern. Item Setting Description LOAD ON: Load on, OFF: Load off Turns the load on or off. RAMP ON: Slope, OFF: Step The ramp (step transition) TRIG ON: Output, OFF: Don’t output The trigger signal during step execution PAUSE ON: Pause, OFF: Don’t pause...

  • Page 64: Sequence Example (Normal Sequence)

    This section explains how to use the operation panel to enter the following example sequence. This section provides an example of how to execute a sequence with two programs on the PLZ164WL. • Program 1 Memo: PROGRAM1, Mode: CC, Loop: 1, Chain: Program 2...

  • Page 65: Editing Program 1

    Sequence Example (Normal Sequence) Editing program 1 In this example, program 1 will be created first and then program 2. You can edit the programs in any order that you like. It is OK to create program 2 first and then create program Memo Press EDIT (SHIFT+A).

  • Page 66: Setting The Steps Of Program 1

    Sequence Example (Normal Sequence) Setting the steps of program 1 Set the current, execution time, and execution pattern of each step in program 1. The various items are set on separate screens. In this example the settings will be configured in the following order: current setting, execution time, and then execution pattern.
  • Page 67 Sequence Example (Normal Sequence) Setting the execution pattern Memo Press to move the cursor to step 001. You can move the cursor SEQ EDIT by pressing LOAD RAMP TRIG PAUSE 001 ON ON OFF OFF For step 1, set LOAD and RAMP to ON. 002 ON OFF OFF OFF 003 OFF OFF ON OFF Press PREV (SHIFT+...

  • Page 68: Editing Program 2

    Sequence Example (Normal Sequence) Editing program 2 After you finish editing program 1, edit program 2. Memo Press PREV (SHIFT+ ) three times to display the You can move the cursor program editing screen. by pressing Memo : Program1 Mode : NCC To exit the sequence e : 50A, 30V...

  • Page 69: Setting The Steps Of Program 2

    Sequence Example (Normal Sequence) Setting the steps of program 2 The settings will be configured in the same order as they were for program 1. Memo Set the currents for steps 1 to 3. You can move the cursor SEQ EDIT CC SET by pressing Set the current for step 1 to 10 A, for step 2 to 5 A, and for...

  • Page 70: How Fast Sequences Work

    How Fast Sequences Work The operation modes that you can execute fast sequences in are constant current (CC) mode and constant resistance (CR) mode. Just like normal sequences, fast sequences are composed of two elements: programs and steps. Programs are groups of executable units called steps. When program 11 is executed, its steps are executed in order, starting with step 0001.
  • Page 71 Editing a Fast-Sequence Program To configure a fast-sequence program, you first need to set the operation mode to CC mode or CR mode. The program is executed the specified number of times. Unlike with normal sequences, you cannot chain programs to be executed after the first program.

  • Page 72: Editing Steps

    Editing Steps in a Fast Sequence After you finish configuring the program settings, press NEXT (SHIFT+ ) to configure the step settings. You can specify one execution condition (current and trigger output) per step. One step corresponds to one executed operation in the executed waveform. The minimum number of steps in a fast sequence is 3.
  • Page 73 Editing Steps in a Fast Sequence Increasing the magnification in the step setting monitor screen You can increase the magnification that the steps are monitored at. p. 73 Press to move the cursor to the magnification, and use the rotary knob to change the magnification.

  • Page 74: Sequence Example (Fast Sequence)

    This section explains how to use the operation panel to enter the following example sequence. This section provides an example of how to execute a sequence on the PLZ164WL that will simulate the waveform shown in the figure below. • Program 11...

  • Page 75: Editing Program 11

    Sequence Example (Fast Sequence) Editing program 11 Memo Press EDIT (SHIFT+A). You can move the cursor by pressing The program editing screen appears. : 11 Memo : Mode : FCC To exit the sequence Set the program number to 11. e : 50A , 4V Loop : 0003 editing screens, press...

  • Page 76: Setting The Steps Of Program 11

    Sequence Example (Fast Sequence) Setting the steps of program 11 Set the current and trigger output of each step in program 11. In this example the current will be set first, followed by the trigger output. Ste p n u m b e r C u r r e n t 10.00 STEP:0014...

  • Page 77: Executing, Pausing, And Stopping Sequences

    Executing, Pausing, and Stopping Sequences After you have finished configuring the sequence, execute it. Executing sequences H 50A 0.00 0.000 SEL PROG NO PROG No. 1 0.000 ram1 0.000 No. 1:Pro ram1 Make sure that the switching and short functions are off. Make sure that the SW ON key light is off and that the short icon is not displayed.

  • Page 78: Stopping A Sequence

    Executing, Pausing, and Stopping Sequences Stopping a sequence If you press RUN/STOP (SHIFT+B) while a sequence is being executed, the sequence will stop. If you press RUN/STOP (SHIFT+B) again after stopping the sequence, the sequence will start over again from the beginning of the selected program. When sequences cannot be executed You cannot execute programs together in a sequence if their modes and ranges do not match.

  • Page 79: External Control

    External Control This chapter explains external control.

  • Page 80: External Control

    External Control The settings in each operation mode normally use the internal reference signal. In external control, the reference signal is supplied externally. It is a voltage signal (analog voltage control). In addition, digital control, such as the turning on and off of the load, can be performed, and signals that indicate the status can be produced.

  • Page 81: About The J1 Connector

    Keep the protective socket in a safe place so that you can attach it to the J1 connector when the connector is not in use. If the protective socket is damaged or lost, contact your Kikusui agent or distributor. Protective socket for J1 [84-49-0110] Possible electric shock.

  • Page 82: J1 Connector Pin Arrangement

    External Control J1 connector pin arrangement External control connector J1 connector pin number Signal Name Description EXT CONT MODE For controlling CC, CR, and CP mode through external voltage. 0 V to 10 V correspond to 0 % to 100 % of the rated current (CC mode) or rated power (CP mode). In CR mode, external input voltages in the range of 0 V to 10 V correspond to the range of resistances from the maximum resistance to the minimum resistance.

  • Page 83: Precautions For High-Speed Load Simulations

    External Control Signal Name Description STATUS COM STATUS signal common for pins 17 to 20. N.C. N.C. SHORT SIGNAL OUT Relay contact output (30 VDC/1 A) SHORT SIGNAL OUT Valid only when the front panel setting is H range. RANGE CONT 0 RANGE CONT 1 H range M range...
  • Page 84 Controlling Constant Current Mode (CC Mode) Externally When you apply an external voltage of 0 V to 10 V to the PLZ-4WL, the input current varies in accordance with the voltage. An external voltage of 0 V results in an input current of 0 A. An external voltage of 10 V results in an input current of 100 % of the specified range.
  • Page 85 Controlling Constant Resistance Mode (CR Mode) Externally When you apply an external voltage of 0 V to 10 V to the PLZ-4WL, the resistance varies in accordance with the voltage. An external voltage of 0 V results in the maximum resistance. An external voltage of 10 V results in the minimum resistance.
  • Page 86 Controlling Constant Power Mode (CP Mode) Externally When you apply an external voltage of 0 V to 10 V to the PLZ-4WL, the power varies in accordance with the voltage. An external voltage of 0 V results in a power of 0 W. An external voltage of 10 V results in a power of 100 % of the specified range.
  • Page 87 Controlling Voltage Mode (CV mode and the +CV modes) When you apply an external voltage of 0 V to 10 V to the PLZ-4WL, the voltage that it produces varies in accordance with the external voltage. An external voltage of 0 V results in a voltage of 0 V. An external voltage of 10 V results in a voltage of 100 % of the specified range.

  • Page 88: Superimposing Constant Current Mode (Cc Mode)

    Superimposing Constant Current Mode (CC Mode) You can superimpose current on the CC mode panel/remote settings by applying an external voltage of -10 V to 10 V to the PLZ-4WL. When the panel and remote control current setting is 0 A, an external voltage of 0 V results in an input current of 0 A, and an external voltage of 10 V results in an input current of 100 % of the specified range.

  • Page 89: Turning The Load On And Off Through External Control

    Turning the Load On and Off through External Control You can use an external control signal to turn the load on and off, and you can check whether the load is on or off. Signal Input for turning the load on and off To turn the load on and off using an external contact, you need to apply an external signal across pin 9 and 15 or 9 and 16 of the J1 connector.

  • Page 90: Load-On Status Signal Output

    Turning the Load On and Off through External Control Load-on status signal output To monitor the status (on or off) of the load externally, monitor the output signal across pins 17 and 22 of the J1 connector. Maximum applied voltage: 30 V Maximum current: 8 mA Load on...

  • Page 91: Using A Trigger Signal To Control The Plz-4Wl

    Using a Trigger Signal to Control the PLZ-4WL The application of a trigger signal during sequence execution unpauses the PLZ-4WL. Use a trigger signal when you want to synchronize the PLZ-4WL with an external device. Trigger signal input Apply a voltage signal with a maximum allowable voltage of 5 V and a pulse width of 10 µs or more across pins 13 and 15 or 13 and 16 of the J1 connector.

  • Page 92: Controlling The Current Range Externally

    Controlling the Current Range Externally You can use an external control signal to control the current range. You can use the range status output to monitor the present state of the range. You cannot control the voltage range. Current Range Control Input Status Output RANGE...

  • Page 93: Alarm Signal

    Alarm Signal You can use an external control signal to activate the PLZ-4WL’s alarm. You can also use the alarm status output to monitor the alarm status (whether or not it is activated). Alarm input Apply an external signal to pins 12 and 15 or 12 +5 V and 16 of the J1 connector.

  • Page 94: Monitor Signal Output

    Monitor Signal Output Trigger signal output The trigger signal can be used as a synchronization signal for monitoring the waveform of the switching operation on an oscilloscope. It can also be used to synchronize with an external device during sequence execution. The trigger signal is output from the TRIG OUT connector (BNC connector) on the PLZ-4WL front panel.

  • Page 95: 6 Maintenance

    Maintenance This chapter describes the maintenance procedures including cleaning, inspection, and calibration.

  • Page 96: Inspection

    Inspection To purchase accessories or options, contact your Kikusui agent or distributor. Cleaning the dust filter A dust filter is installed on the inside of the louver on the front panel. Periodically clean the filter to prevent clogging. • A clogged filter hinders the cooling of the inside of the PLZ-4WL, can cause malfunctions, CAUTION and can shorten the PLZ-4WL’s service life.

  • Page 97: Internal Inspection

    The exact timing varies depending on how the PLZ-4WL is used, but we recommend that you have the PLZ-4WL overhauled after about 10,000 hours of operation. An overhaul includes internal inspection and cleaning.To have the PLZ-4WL overhauled, please contact a Kikusui distributor or agent.

  • Page 98: Calibration

    Calibration The PLZ-4WL is calibrated properly when it is shipped, but we recommend that you calibrate it regularly to keep it operating at top performance. What gets calibrated? The current and voltage values are calibrated. The current values are calibrated for each of the three current ranges (L, M, and H). The voltage values are calibrated for each of the two voltage ranges (4 V and 30 V).

  • Page 99: Preparation

    Voltage: 35 V (constant current power – Current: 0.5 A supply) 1: PLZ164WL, 2: PLZ334WL Connect the equipment as shown below. Select an appropriate shunt resistor according to type of calibration that you are performing. PLZ-4WL Regulated DC Shunt resistor...

  • Page 100: Cc Mode Calibration (Calibration Numbers 1, 2, And 3)

    ■ CC mode settings The current settings for each model are listed below. Current to Be Matched Output Setting of Calibration Number and Item the Power Supply PLZ164WL PLZ334WL Offset 50 mA ± 0.05 mA 100 mA ± 0.1 mA CC (Low)
  • Page 101 CC Mode Calibration (Calibration numbers 1, 2, and 3) CC(Low) Offset Adjustment The current calibration value (hexadecimal) DAC REF : 0x0001 Cursor MON : 0x0001 PREV NEXT Indicates that the values are hexadecimal Press to set the cursor position of DAC REF, and then turn the rotary knob so that the current flowing through the shunt resistor is within ±0.1 % of the value corresponding to 10 % of the full scale value (see the table of CC mode settings).

  • Page 102: Cv Mode Calibration

    CV Mode Calibration (Calibration numbers 4 and 5) Calibrating the mid range Calibrate the Mid range in the same way that you calibrated the Low range. In step 4 , select “2. CC(Mid).” Calibrating the high range Calibrate the High range in the same way that you calibrated the Low range. In step 4 , select “3.
  • Page 103 CV Mode Calibration (Calibration numbers 4 and 5) Press ENTER. The load turns on automatically, and the offset calibration (CV 4V Offset Adjustment) screen appears. CV 4V Offset Adjustment The current calibration value (hexadecimal) DAC REF : 0x0001 Cursor MON : 0x0001 PREV NEXT Indicates that the values are hexadecimal...

  • Page 104: Ending Calibration

    Ending Calibration Calibrating the high range Calibrate the High range in the same way that you calibrated the Low range. In step 4 , select “5. CV 30 V.” The calibration of CV mode is complete after you calibrate the High range. Ending Calibration Press PREV (SHIFT+ ).

  • Page 105: Troubleshooting

    If your problem does not correspond to any of the listed items, we recommend that you initialize the PLZ-4WL to its factory default settings. If you carry out the corrective action but the situation does not improve, contact your Kikusui distributor or agent. ■ Symptom 1:Nothing appears on the display when the POWER switch is turned on.
  • Page 106 Troubleshooting ■ Symptom 5:ALARM is activated. Check Item Possible Cause Remedy Location and Status of the Object Check Result Is the fan stopped? Overheat protection tripped. Immediately stop the use of the instrument and request repairs. Is the air intake or outlet Overheat protection tripped.

  • Page 107: Specifications

    Specifications This chapter contains the specifications and gives the dimensions of the PLZ-4WL.

  • Page 108: Ratings

    Denotes a percentage of the rated input voltage, rated input current, or rated input power. • % of reading: Denotes a percentage of the input voltage, input current, or input power reading. Ratings Model PLZ164WL PLZ334WL Operating voltage (DC) 0.3 V to 30 V Current 50 A 100 A...

  • Page 109: Constant Resistance (Cr) Mode

    Specifications Constant resistance (CR) mode Model PLZ164WL PLZ334WL H range 165 S to 3 mS 330 S to 6 mS Operating range (6.06 m to 333 ) (3.03 m to 166.7 ) M range 16.5 S to 300 µS 33.3 S to 600 µS (60.6 m...

  • Page 110: Constant (Cp) Power Mode

    Specifications Constant (CP) power mode Model PLZ164WL PLZ334WL Operating range H range 16.5 W to 165 W 33 W to 330 W M range 1.65 W to 16.5 W 3.3 W to 33 W L range 0.165 W to 1.65 W 0.33 W to 3.3 W...

  • Page 111: Switching Mode

    Specifications Switching mode Model PLZ164WL PLZ334WL Operation modes CC and CR Duty cycle 5 % to 95 % in 1 % steps Frequency range 1 Hz to 50 kHz Frequency 1 Hz to 10 Hz 0.1 Hz resolution 10 Hz to 100 Hz...

  • Page 112: Soft Start

    Specifications Soft start Model PLZ164WL PLZ334WL Operation mode OFF, 100 µs, 200 µs, 500 µs, Selectable times 1 ms, 2 ms, 5 ms, 10 ms, or 20 ms Time accuracy ±(30 % of set +10 µs) The time it takes to shift from 10 % to 90 % of the rated current...

  • Page 113: Sequence Function

    Specifications Sequence function Model PLZ164WL PLZ334WL Normal Operation modes CC, CR, CV, and CP sequence Maximum number of steps Step execution time 1 ms to 999 h 59 min Time resolution 1 ms for 1 ms to 1 min 100 ms for 1 min to 1 h...

  • Page 114: Common Specifications

    Specifications Common specifications Analog External Control (J1 connector) Load on/off control input Turn on the load with a high (or low) CMOS level signal Load on status output On when the load is on (open collector output from a photocoupler) Range switch input Switch ranges L, M, and H using a 2-bit signal Range status output...

  • Page 115: General Specifications

    Specifications General specifications Model PLZ164WL PLZ334WL Input voltage range 100 Vac to 240 Vac (90 Vac to 250 Vac), single phase, continuous Input frequency range 47 Hz to 63 Hz Power consumption 95 VA max 65 Amax Inrush current 0 C to 40 C (32 F to 104 F)

  • Page 116: Dimensions

    6 mm (0.31 inches). (Foot x 4) (Foot attachment hole x 4) (M3 screw hole x 4) 70 (2.76) 275 (10.83) 55 (2.16) MAX455 (17.91) 214.5 (8.44) MAX40 400 (15.75) (1.57) Unit: mm (inch) Outline drawing (PLZ164WL and PLZ334WL) PLZ-4WL...

  • Page 117: Appendix

    Appendix A Operating Area B Sequence Program Creation Table C Options...

  • Page 118: A Operating Area

    Operating Area As shown in the figure, the PLZ-4WL can be used within the area enclosed by L , the constant-voltage line defined by the rated voltage; L , the constant-power line defined by the rated power; L , the constant-current line defined by the rated current; and L , the constant- voltage line defined by the minimum operating voltage (the enclosed area is where specifications are guaranteed).

  • Page 119: How Constant Current (Cc) Mode Works

    Operating Area How constant current (CC) mode works In constant current (CC) mode, the PLZ-4WL maintains the same current even if the voltage changes. Constant current mode operation When the PLZ-4WL is used in constant current (CC) mode, it operates as a constant-current load as shown in the figure below.

  • Page 120: How Constant Resistance (Cr) Mode Works

    Operating Area ■ Operation on segment CD If the voltage of the constant-voltage power supply is set to V2 and the input current (load current) of the PLZ-4WL is increased, the operating point moves along segment CD. Point D is the maximum current in the range being used. How constant resistance (CR) mode works In constant resistance (CR) mode, the PLZ-4WL sinks current in proportion to the voltage variation.
  • Page 121 Operating Area If the protection action is set to LIMIT, the PLZ- 4W sinks current as a constant-power load at point B. Even if you attempt to decrease the resistance to increase the current, the current will not increase beyond point B. If you increase the resistance to decrease the input current, overpower protection (OPP) is cleared.

  • Page 122: How Constant Power (Cp) Mode Works

    Operating Area How constant power (CP) mode works In CP mode, the PLZ-4WL sinks current so that the power consumed inside the electronic load is constant. Constant power mode operation When the PLZ-4WL is used in constant power (CP) mode, it operates as a constant-power load as shown in the figure below.
  • Page 123 Operating Area The load is turned off (no current flows). LOAD OFF The PLZ-4WL stops operating as a load. Point B The PLZ-4WL switches out of constant power (CP) mode. LIMIT Overcurrent protection (OCP) continues, and the PLZ-4WL operates as a constant-current load. ■...

  • Page 124: How Constant Voltage (Cv) Mode Works

    Operating Area How constant voltage (CV) mode works In CV mode, the PLZ-4WL sinks current so that the voltage at the load input end of the PLZ- 4WL is constant. Constant voltage mode operation When the PLZ-4WL is used in constant voltage (CV) mode, it operates as a constant-voltage load (shunt regulator) as shown in the figure below.
  • Page 125 Operating Area The load is turned off (no current flows). LOAD OFF The PLZ-4WL stops operating as a load. Point N The PLZ-4WL switches out of constant voltage (CV) mode. LIMIT Overpower protection (OPP) continues, and the PLZ-4WL operates as a constant-power load. Transition of the operating point: overcurrent protection (OCP) Constant current line Operating area...

  • Page 126: How Constant Current And Constant Voltage (Cc+Cv) Mode Works

    Operating Area How constant current and constant voltage (CC+CV) mode works On the PLZ-4WL, you can add constant voltage (CV) mode to constant current (CC) mode. Constant current and constant voltage mode operation When the PLZ-4WL is used in constant current and constant voltage mode (CC+CV), it operates as a constant-current load and a constant-voltage load (shunt regulator) as shown in the figure below.
  • Page 127 Operating Area If the protection action is set to LIMIT, the PLZ-4WL sinks current as a constant-power load at point N. Even if you attempt to increase the current, it will not increase beyond point N. If you decrease the current, overpower protection (OPP) is cleared. The PLZ-4WL returns to constant current (CC) mode, and the operating point moves along segment MN.

  • Page 128: How Constant Resistance And Constant Voltage (Cr+Cv) Mode Works

    Operating Area How constant resistance and constant voltage (CR+CV) mode works On the PLZ-4WL, you can add constant voltage (CV) mode to constant resistance (CR) mode. Constant resistance and constant voltage mode operation When the PLZ-4WL is used in constant resistance and constant voltage mode (CR+CV), it operates as a constant-resistive load and a constant-voltage load (shunt regulator) as shown in the figure below.
  • Page 129 Operating Area (OPP) is cleared. The PLZ-4WL returns to constant resistance (CR) mode, and the operating point moves along segment MN. The load is turned off (no current flows). LOAD OFF The PLZ-4WL stops operating as a load. Point N The PLZ-4WL switches out of constant resistance (CR) mode.

  • Page 130: Operating Areas Of Each Model

    Operating Area Operating areas of each model Operating areas of the PLZ164WL Operating area where specifications are guaranteed 30 V 0.3 V Actual operating area Operating area where 3.3 V H range specifications are guaranteed 0.3 V Actual operating area...
  • Page 131 Operating Area Operating areas of the PLZ334WL Operating area where specifications are guaranteed 30 V 0.3 V Actual operating area Operating area where 3.3 V H range specifications are guaranteed 0.3 V Actual operating area 50 mV 20 mV 0.1 V 11 A 100 A 100 A...

  • Page 132: B Sequence Program Creation

    Sequence Program Creation Table For normal sequence Program name: Date: Program number (1 to 10) Memo (Up to 11 characters) Operation mode CC, CR, CV, CP Range (A) -- Current (A) -- Voltage (V) Loop (1 to 9999) Last Load (OFF/ON) OFF, ON Last Set Chain (OFF, 1 to 10)
  • Page 133 Sequence Program Creation Table Entry example Program name: Example sequence of chapter 6: PLZ164W Date: Program number (1 to 10) Memo Program1 (Up to 11 characters) Operation mode Range 50 (A) -- 30 (V) Current (A) -- Voltage (V) Loop (1 to 9999) 0001 Last Load (OFF/ON) OFF,...
  • Page 134 Options The following options are available for the PLZ-4WL. For details, contact your Kikusui agent or distributor. ■ Rack adapter A adapter for mounting the PLZ-4WL on a rack. To support the PLZ-4WL, attach an angle support to it that is appropriate for the adapter.
  • Page 135 INDEX DEL key 9 Memo 61 dimensions 116 menu settings 54 -S 24 DIRECT 46 Mode 61 +CV mode 30 display contrast, adjusting 26 +S 24 normal sequence 58 elapsed time display 53 A key 9 ENTER key 9 ABC preset memory 45 OCP 50 AC INPUT 10 offset value 98...
  • Page 136 serial number 10 setup memory 44 recalling 48 saving 47 SHIFT key 9 short function 40 short icon 40 slew rate 38 soft start 39 step 60 storage humidity range 115 storage temperature range 115 STORE key 9 switching function 36 TIME BASE 71 time measurement 53 TRIG 63...
  • Page 138 KIKUSUI ELECTRONICS CORP. 1-1-3 Higashiyamata, Tsuzuki-ku, Yokohama, 224-0023, Japan Tel: +81-45-593-7570 Fax: +81-45-593-7571 http://www.kikusui.co.jp/en Website...

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